You need to keep a supply of subcomponents on hand. Options on how to go about that:

* Manually. Keep an eye on basic components and queue up a thousand (ctrl-shift-click) whenever you're running low.

* Using the new Event Controllers. Create a production block for every type of component, turn it off, and queue up the chosen component on auto-repeat. Use an Event Controller to watch your component levels. Whenever you run low, have it turn the production block on. Have another one turn it off once it hits the desired amount. A simple but expensive choice, since you need lots of production blocks and controllers...

* Use a programmable block (and optionally timer) to run a script which automatically queues the components up when they drop below a desired level. You can either go through the painstaking effort of figuring out how to write that script, or...

* You can use this script I spent the weekend writing: pastebin.com/cMaeJcMW . Assumes you have a big container called "stockpile.storage", the production blocks are called "factory.mod", "factory.assembler", "factory.electronics", "factory.fabricator", "factory.plate", "factory.ceramics", "factory.synthetics", "factory.loom", "factory.cement", "factory.wire", "factory.nano", and "factory.extruder", and everything is connected by conveyor. You'll want to adjust the manufacturedItems table to your liking, and dummy out the entry for CeramicPlate. I've briefly tested it, but make no assurances it will work long-term.

Thank you!!